#210504#210504

#210504 is a very dark, muted red. Relative luminance 0.004; OKLCH L 17.0% C 0.050 H 27.0°. Best body text is #FFFFFF at 19.30:1 contrast (WCAG AA passes).

Color values

HEX	#210504
RGB	rgb(33, 5, 4)
HSL	hsl(2, 78%, 7%)
HSV	hsv(2, 88%, 13%)
CMYK	cmyk(0%, 84.8%, 87.9%, 87.1%)
CIE-LAB	lab(3.98, 11.66, 4.53)
CIE-LCH	lch(3.98, 12.51, 21.25°)
OKLab	oklab(16.99% 0.0449 0.0229)
OKLCH	oklch(16.99% 0.05 27)
XYZ	xyz(0.7035, 0.4407, 0.1629)
Luminance	0.0044 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#210504 #042021

analogous

#210412 #210504 #211404

triadic

#210504 #042105 #050421

tetradic

#210504 #122104 #042021 #140421

square

#210504 #122104 #042021 #140421

split-complementary

#210504 #042114 #041221

monochromatic

#1B0403 #1B0403 #210504 #580D0B #8E1611

Accessibility & contrast

On white

19.30

#210504 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.09

#210504 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #210504

19.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##210504	#FFFFFF	#000000	##FFFFFF
##210504	1.00	19.30	1.09	19.30
#FFFFFF	19.30	1.00	21.00	1.00
#000000	1.09	21.00	1.00	21.00
##FFFFFF	19.30	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0C0A04

Deuteranopia (green-blind)

#131003

Tritanopia (blue-blind)

#250105

Achromatopsia (no color)

#0E0E0E

Design tokens & code

CSS

--color: #210504;
/* rgb */ color: rgb(33, 5, 4);
/* oklch */ color: oklch(17.0% 0.050 27.0);

Tailwind

colors: {
  custom: {
    50: '#5c4948',
    500: '#210504',
    950: '#000000',
  },
}

SCSS

$custom: #210504;
$custom-light: #5c4948;
$custom-dark: #000000;

JSON

{
  "hex": "#210504",
  "rgb": {
    "r": 33,
    "g": 5,
    "b": 4
  },
  "hsl": {
    "h": 2.069,
    "s": 78.378,
    "l": 7.255
  },
  "oklch": {
    "l": 0.16989,
    "c": 0.05036,
    "h": 27
  },
  "luminance": 0.00441
}

Semantic roles & 50–950 ramp

primary

#210504

secondary

#1D6164

accent

#EEF533

background

#F5F4F4

surface

#E9E6E6

border

#C5C2C2

text

#040000

muted

#797777

Preview Lab

Preview with #210504

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →